Unable to wtihdraw

A month ago, I entered an communication platform and said that it was discussing stocks. Among them, a teacher commented on various stocks and recommended us to buy them. Later, he said that the stock market fell and it was not easy to trade so he led us to the currency market and opened an account to lead people trade bitcoin. I deposited 140,000 RMB successively. The teacher called the order, and we copied it. Although we made money and the account balance was rich, I never succeeded in withdrawing money. The withdrawal process keep displaying processing. Even it is approved, the account has not been debited and no remittance has been received.